Vintners in the Napa Valley have begun to evaluate the damage to their cellars following Sunday's 6.1-magnitude earthquake, which rocked American Canyon and its immediate environs at 3:20 a.m. Damage is being reported across the valley, and many winery tasting rooms will be closed today and possibly tomorrow.

In downtown Napa, winemaker Alison Crowe of Garnet Vineyards says she and her family were "literally thrown out of bed" when the quake hit.

"It was very violent," says Crowe, mother to William, 3, and Bryce, 1. The family lives in an 1898 redwood farmhouse which sustained no structural damage, but they are currently without gas or electricity. "We're making pancakes on the barbecue outside."

While Crowe's home collection -- 100 bottles of the winery's premium pinot noir and chardonnay -- were "undamaged and still resting snug on their sides," initial reports from the winery's American Canyon warehouse indicate that "a lot of bottles" were lost there, says Crowe, who chose not to disclose the name of the warehouse until the owners make an official statement.

The loss was even bigger at Napa's City Winery, a venue for music, winemaking and the culinary arts, which opened this past spring in the historic Napa Valley Opera House. According to owner Michael Dorf, the winery's restaurant has been flooded with inches of water. Liquor and wine bottles tumbled and crashed to the floor and food fell off shelves throughout the kitchen.

"Most likely, all the other restaurants along Main Street suffered similar issues," Dorf said via e-mail.

In total, Dorf estimates the loss of wine at 300 to 400 bottles, including some rare wines purchased at auction, as well as more than 200 pieces of Riedel stemware. At this time, the venue and main structure appear undamaged, he says, but they are canceling tonight's concert of (NVOH and Lucky Penny) and are unclear when they will reopen. Men Without Hats is supposed to perform on Monday.

When Crowe heads to work on Monday, she will double-check the winery's barrels and tanks for damage but is confident that the quake will not interfere with harvest, which is currently in full swing in parts of the valley.

"Everyone's going to gear up and get right back to work," she says. "It's a blessing that we've had this recent cool weather because it has actually slowed things down a bit. I took my first load of Carneros pinot noir in (last Friday) and wasn't planning on crushing harvesting more fruit until this Friday. We lives in the lap of Mother Nature here so we know that we're not in control but sometimes it takes something as big as an earthquake to really open your eyes."